SAPPHIRE AND DIAMOND RING. Centring on an oval sapphire weighing carats, to an openwork stylised mount set with tapered baguette and brilliant-cut diamonds together weighing approximately carats, mounted in 18 karat white and yellow gold.
This sensational Art Deco diamond ring, dating from France, presents geometry raised to a new art form. A high-caliber carat European-cut diamond sparkles brightly atop a layered octagonal setting. The beautiful bright white center diamond
Carat No Heat Sapphire Diamond Ring. This platinum ring centers a GIA certified cushion cut Sri Lanka sapphire weighing that has no indication of heat treatment. The mounting is enhanced with sparkling round cut diamonds weighing approximately century
The Logan Sapphire Brooch. the Logan Sapphire from Sri Lanka. It is the heaviest mounted gem in the National Gem Collection, and is framed in a brooch setting surrounded by twenty round brilliant-cut diamonds, totalling 16 carats